期刊
AMERICAN JOURNAL OF CHINESE MEDICINE
卷 41, 期 3, 页码 473-485出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0192415X13500341
关键词
Rhein; Endothelial Cells; Cell Adhesion Molecules; Lipopolysaccharide
资金
- National Natural Science Foundation of China [81001439]
Reducing the expression of endothelial cell adhesion molecules (ECAMs) is known to decrease inflammation-induced vascular complications. In this study, we explored whether rhein can reduce the inflammation-induced expression of ECAMs in human umbilical vein endothelial cells (HUVECs) with or without lipopolysaccharide (LPS) stimulation. HUVECs were treated with different concentrations of rhein with or without 2.5 mu g/ml LPS stimulation. Cell viability was assayed using the MTT method. Real-time PCR and Western blot analysis were used to measure the transcription and expression levels of ECAMs, including intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), E-SELECTIN and related signaling proteins. The results indicated that rhein (0-20 mu mol/L) and LPS (010 mu g/ml) had no effect on the viability of HUVECs. LPS could promote the expression of VCAM-1, ICAM-1 and E-SELECTIN. Rhein appeared to target VCAM-1, ICAM-1 and E-SELECTIN, with the transcription and expression of all three factors being reduced by the rhein treatment (10 and 20 mu mol/L). The transcription and expression of VCAM-1 were also reduced by treatment with rhein (10 and 20 mu mol/L) in the presence of LPS stimulation. In conclusion, rhein treatment reduced the expression of VCAM-1 in HUVECs via a p38-dependent pathway.
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